12. A force produces potential U(x) = ax4. where a = 1.43 J/m4 . What is the force and direction when the particle is at x = -0.78 m? (A)ON (B)-0.67 N (C) 0.67N (D) -2.7 N (E) 2.7 N

12. A force produces potential U(x) = ax⁴. where a = 1.43 J/m⁴ . What is the force and direction when the particle is at x = -0.78 m?
(A)ON
(B)-0.67 N
(C) 0.67N
(D) -2.7 N
(E) 2.7 N

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統計： A(0), B(0), C(2), D(7), E(20) #3084471

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B1 · 2025/11/14

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14. Which statement regarding total internal retlection is not true? (A) It cannot occur when the incident light is in the medium of lower index of refraction. (B) Total internal reflection oceurs for rays with their incident angles greater a critical angle. (C) It explains the phenomenon that the water-to-air interface looks like a mirror when an observer is in water. (D) It is used in transmission through optical fibers. (E) The effect is used to realize polarizers.

12. A force produces potential U(x) = ax⁴. where a = 1.43 J/m⁴ . What is the force and direction when the particle is at x = -0.78 m?
(A)ON
(B)-0.67 N
(C) 0.67N
(D) -2.7 N
(E) 2.7 N

詳解 (共 1 筆)

相關試題

相關試卷

12. A force produces potential U(x) = ax4. where a = 1.43 J/m4 . What is the force and direction when the particle is at x = -0.78 m?(A)ON(B)-0.67 N(C) 0.67N(D) -2.7 N(E) 2.7 N

詳解 (共 1 筆)

相關試題

相關試卷

12. A force produces potential U(x) = ax⁴. where a = 1.43 J/m⁴ . What is the force and direction when the particle is at x = -0.78 m?
(A)ON
(B)-0.67 N
(C) 0.67N
(D) -2.7 N
(E) 2.7 N